(a) Berdasarkan gambar di Kutub Utara, apakah yang boleh a tentang perkembangan Zaman Air Batu?
(b) Pada pandangan anda, mengapakah kehidupan 18,000 tahu
mencabar berbanding dengan hari ini?
Apakah perkembangan yang berlaku pada Zaman Pleistosen?
Terangkan faktor-faktor yang membolehkan manusia berhijrah
pada Zaman Air Batu Akhir.
Mengapakah kita perlu mengekalkan kelestarian alam sekitar?
Pada pendapat anda, mengapakah berlaku kepupusan hai
semasa Zaman Pleistosen pada Zaman Air Batu Akhir?
incangkan kesan kecairan air batu terhadap perubahan fi​

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced. be sure your answer has the correct number of significant digits.